java--static关键字练习

编写一个类实现银行账户的概念，包含的属性有“账户”、“密码”、“存款余额”、“利率”、“最小余额”，定义封装这些属性的方法，账户要自动生成，编写主类，使用银行账户类，输入，输出3个储户的上述信息。
考虑：哪些属性可以设计成static属性

package test8;

public class TestAccount {

	public static void main(String[] args) {
		Account a1=new Account("abc1",1000);
		Account a2=new Account("abc2",2000);
		Account a3=new Account("abc3",2000);
		System.out.println(a1);
		System.out.println(a2);
		System.out.println(a3);
		

	}

}
class Account{
	private int id;
	private String password;
	private double balance;
	private static double rate=0.05;
	private static double minBalance=1;
	private static int init=1000;//设置为static，实现累加效果
	
	public Account(String password,double balance) {
		this.id=init++;
		this.password=password;
		this.balance=balance;
		
	}
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public double getBalance() {
		return balance;
	}
	public void setBalance(double balance) {
		this.balance = balance;
	}
	public static double getRate() {
		return rate;
	}
	public static void setRate(double rate) {
		Account.rate = rate;
	}
	public static double getMinBalance() {
		return minBalance;
	}
	public static void setMinBalance(double minBalance) {
		Account.minBalance = minBalance;
	}

	@Override
	public String toString() {
		return "Account [id=" + id + ", password=" + password + ", balance=" + balance + "]";
	}
	

运行结果